Nor logic is a way of combining two or more pieces of information to decide if the result is true or false. Think of it like a tea game. A person will ask you two questions - if your answer to both is "No", then the result is true. If your answer to either is "Yes", then the result is false. For example, if someone asks you "Do you like apples?" and "Do you like oranges?" And you answer "No" to both, the result according to nor logic is "true".